Find the must places to see in Baku

Baku ( bə-KOO, BAH-koo; Azerbaijani: Bakı, IPA: [bɑˈcɯ]) is the capital and largest city of Azerbaijan, as well as the largest city on the Caspian Sea and of the Caucasus region. It's 16:21 right now , with clear sky and the temperature of 26°C (78.8°F) in Baku.